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15 Cards in this Set
- Front
- Back
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motion
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The state in which one object's distance from another is changing.
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reference point
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A place or object used for comparison to determine if an object is in motion.
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speed
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The distance an object travels in one unit of time.
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velocity
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Speed in a given direction.
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acceleration
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The rate at which velocity changes.
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force
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A push or pull exerted on an object.
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unbalanced forces
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A net force that causes a change in an object's motion.
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balanced forces
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Equal forces acting on an object in opposite directions.
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Newton's First Law of Motion
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An object at rest will remain at rest unless an unbalanced force acts upon it.
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Newton's Second Law of Motion
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The net force on an object is equal to the mass of the object multiplied by its acceleration.
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Newton's Third Law of Motion
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If one object exerts a force on a second object, the object exerts a force of equal strength in the opposite direction on the first object.
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work
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The product of force and distance when force is used to move an object.
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energy
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The ability to do work or cause change, such as moving one object some distance.
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potential energy
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Energy that is stored and available to be used later.
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kinetic energy
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Energy that an object has because of its motion.
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